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Study Resources (Chemistry)

11) In acidic solutions, soaps are converted to A) salts. B) fatty acids. C) detergents. D) fats. 12) In hard water, soaps are converted to A) insoluble salts. B) fatty acids. C) detergents. D) esters. 13) An advantage of potassium soaps is that they are ________ than sodium soaps. A) softer B) harder C) more neutral D) stronger 14) Bathtub ring is.
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21.2   True/False Questions 1) Soap is a salt of a long-chain carboxylic acid. 2) A soap has a long hydrophilic tail and a charged hydrophobic head. 3) Soap is ineffective against bacteria, so bacteriocidal agents must be added to make anti-bacterial soaps. 4) An agent that stabilizes the suspension of nonpolar substances in water.
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71) Sunscreens contain chemicals that A) absorb both UV-A and UV-B rays. B) absorb neither UV-A nor UV-B rays. C) inhibit melanin production in the skin. D) promote melanin production in skin. 72) Exposure of skin to UV radiation causes A) melanin production. B) increased risk of skin cancer. C) premature aging of skin. D) UV exposure causes all.
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111) What chemical compound is used to bleach hair? A) hydrogen peroxide B) sodium hypochlorite C) melanin D) thioglycolic acid 112) People with blonde hair have ________ pigment(s) in their hair. A) very little B) melanin C) phaeomelanin D) melanin and phaeomelin 113) Hair is most efficiently "permanently" dyed by A) soaking hair in the colored dye. B) adding colorless reactants that.
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1.1   Multiple-Choice Questions 1) The branch of chemistry that is the study of compounds containing carbon is called A) organic chemistry B) geochemistry C) physical chemistry D) biochemistry E) general chemistry 2) The branch of chemistry that is the study of the composition, properties, and reactions of matter is  called A) organic chemistry B) geochemistry C) physical chemistry D).
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31) An experimental pesticide with a very specific action that is harmless to humans and other animals and completely biodegradable is A) DDT. B) parathion. C) a carbamate. D) a viral pesticide. 32) Juvenile hormones are chemicals A) that speed up the maturation of insects. B) that slow down the maturation of insects. C) that halt maturation of.
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1.3   Matching Questions Are the numbers in each of the following statements measured or exact? A) exact B) measured 1) In the U.S. system there are 5280 feet in one mile. 2) The patient's blood sugar level is 350 mg/dL. 3) There are 452 pages in a book. 4) The rabbit weighs 2.5 pounds. 5) There are.
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51) A green product would most likely NOT contain which of the following? A) enzymes B) materials derived from plant sources C) degradable ingredients D) volatile hydrocarbons 52) When we buy products for household use, we should avoid products whose packaging is A) reusable. B) recyclable. C) degradable. D) longest lasting. 53) A molecule that contains only C,.
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51) Which class of compounds is thought to be possibly anticarcinogenic? A) prostaglandins B) oxidizing agents C) reducing agents D) antioxidants 52) Which of the following will have anticarcinogenic activity? A) aromatic amines, such as β-naphthylamine B) oncogenes C) antioxidants, such as Vitamin E D) polycylic aromatic hydrocarbons, such as 3,4-benzpyrene 53) Which of the following has been shown to.
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61) Which would be classified as a reactive waste? A) sodium metal B) sodium chloride C) sodium bromide D) aluminum metal 62) The best way to dispose of a flammable waste is A) process through a wastewater treatment plant. B) bury in a landfill. C) burn in an incinerator. D) store in a sealed barrel. 63) The best way to.
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11) Phosphorus-based insecticides such as malathion are less toxic than warfare nerve agents such as sarin. 12) Organic phosphorus insecticides are nerve poisons that work by binding to acetylcholinesterase and blocking the breakdown of acetylcholine. 13) The LD50 value is the amount of a substance that will kill 50% of test animals. 14).
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21) The molecule shown below is a A) soap. B) detergent. C) fatty acid. D) polymer. 22) A problem with ABS detergents is that they A) are toxic. B) do not degrade readily. C) contain phosphates. D) are less effective in hard water. 23) An advantage of LAS detergents over ABS detergents is that they A) are effective in.
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41) Actylcholinesterase acts to change acetyl choline to A) acetic acid, water and choline. B) water and choline. C) water and acetic acid. D) acetic acid and choline. 42) Which of the following will make the most effective poison for rats and mice? A) aspirin, LD50 = 1.5 g/kg B) acetaminophen, LD50 = 0.34 g/kg C) nicotine, LD50.
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11) The metric base unit for length is the A) meter B) inch C) millimeter D) kilometer E) foot 12) The metric unit for volume is the  A) meter B) quart C) liter D) pint E) centimeter 13) Which of the following is the basic unit of mass in the SI? A) pound B) kilogram C) milligram D) microgram E) gram 14) Which of the following.
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31) Which of the following categories of surfactants gives the least amount of sudsing? A) amphoteric surfactants B) anionic surfactants C) cationic surfactants D) nonionic surfactants 32) Soaps are A) anionic surfactants. B) nonionic surfactants. C) neutral surfactants. D) positive surfactants. 33) Automatic dishwashing detergents are A) similar to detergents for hand washing. B) relatively strong bases. C) relatively strong acids. D) safe for.
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41) Paraquat is an example of a ________ herbicide. A) narrow spectrum B) broad spectrum C) preemergent D) postemergent 42) All of the following are natural organic herbicides EXCEPT A) acetic acid. B) gluten meal. C) bone meal. D) eugenol, an ingredient in oil of cloves. 43) In a modern society, approximately what percentage of human energy is used to.
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21) Gold in a wedding ring is a(n) A) compound. B) heterogeneous mixture. C) element. D) homogeneous mixture. E) None of the above. 22) The primary substances of which all other things are composed are A) molecules. B) compounds. C) elements. D) electrons. E) protons. 23) Which of the following is a property of a solid?  A) It takes the.
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2.2   Short Answer Questions 1) The energy of motion is called __________ energy. 2) The lowest temperature on the Kelvin scale is __________ kelvin. 3) The simplest type of pure substance is an  __________. 4) A mixture which has uniform properties is a    __________ mixture. 5) The change of state from.
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21) Nitrate acts as a poison by A) oxidizing hemoglobin to methemoglobin, which cannot carry oxygen. B) reacting with enzymes that break down toxic wastes in the liver. C) interfering with oxidative enzymes. D) blocking cell protein synthesis. 22) Which compound has been used as a poison to kill predators? A) NaCN B) fluoroacetic acid C) Cd D).
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61) Which generally does NOT need to be proven safe and effective before marketing? A) cosmetic B) drug C) food additive D) All of the above must be proven safe and effective. 62) Which is NOT a cosmetic? A) antiperspirant B) lipstick C) perfume D) shampoo 63) The oil secreted by glands in the skin is called A) sweat. B) sebum. C) melanin. D).
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21) Modern toothpastes frequently contain fluorides, which help to reduce tooth decay. 22) The two essential ingredients of toothpaste are a detergent and a flavoring. 23) Depilatories contain a strong base which can destroy peptide bonds in hair. 24) In purchasing a shampoo or laundry detergent it is always best to buy the.
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11) Strong acids and bases are damaging to living cells because even in dilute solutions they A) are oxidizing agents. B) are reducing agents. C) catalyze the hydrolysis of proteins. D) form dangerous peroxides. 12) Which of the following is a corrosive poison? A) sulfuric acid B) vinegar C) table salt D) sugar 13) Which of the.
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21.3   Short Answer Questions 1) What happens when chlorine bleaches are used on polyester fabrics? 2) The universal pigment used in paint today is ________. 3) The three basic ingredients of a paint are ________, ________, and ________. 4) What is the difference between paraffin and other waxes? 5) People with blonde hair have ________.
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101) Hair is composed of A) carbohydrate. B) protein. C) fat. D) nucleic acid. 102) Relative to skin protein, hair protein has more A) amino acids. B) disulfide bonds. C) hydrogen bonds. D) amide bonds. 103) The only necessary ingredient in shampoo is A) water. B) conditioner. C) fragrance. D) detergent. 104) The pH of hair is A) greater than 7. B) equal to 7. C) slightly less.
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  21.1   Multiple Choice Questions 1) One of the major problems with the use of household chemicals is A) they are toxic. B) consumers often fail to read directions and warnings. C) they do not perform well. D) all of the above 2) The majority of household chemicals are A) cleaning agents. B) laundry products. C) cosmetics. D) paints. 3) Sodium carbonate.
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91) The fraction of compounds in a perfume that have the lowest volatility would be called the A) end note. B) middle note. C) menthol note. D) top note. 92) A substance added to perfume to balance the flowery odors is A) middle note. B) solvent. C) musk. D) top note. 93) Perfumes are A) pure substances. B) compounds. C) simple.
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20.2   True/False Questions 1) The three primary plant nutrients found in fertilizers are nitrogen, phosphorus and potassium. 2) More nitrogen is fixed by lightening than by bacteria. 3) Using fresh manure as fertilizer for fruits and vegetables can result in food-borne illnesses. 4) As the LD50 of a substance decreases, the toxicity of the.
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  22.1   Multiple Choice Questions 1) Which of the following common kitchen chemicals are toxic at certain concentration or under certain biological conditions? A) table salt B) cane sugar C) baking soda D) All of these can be toxic. 2) The study of the effects of poisons, their detection and identification and their antidotes is known as.
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31) Lead is used in A) batteries. B) some gasolines. C) plumbing fixtures. D) Lead is used in all of the above. 32) Lead poisoning affects the A) digestive system. B) endocrine system. C) reproductive system. D) central nervous system. 33) Cadmium poisons by A) promoting loss of calcium from bone. B) deactivating enzymes. C) hydrolyzing proteins. D) destroying cell membranes. 34) The cause of.
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2.1   Multiple-Choice Questions 1) An example of kinetic energy is  A) a coiled spring. B) running water. C) a tree. D) natural gas. E) chemical energy. 2) The energy associated with the motion of particles in a substance is called  A) temperature. B) electrical energy. C) heat. D) chemical energy. E) potential energy. 3) Which of the following is an example.
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11) A preemergent herbicide should be applied to fields when seedlings are at least six inches high. 12) Atrazine disrupts normal estrogen function and has been linked to sexual abnormalities in frogs. 13) Organic farming uses no synthetic fertilizers or pesticides. 14) In modern societies, only 10% of human energy is used to.
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22.2   True/False Questions 1) Herbicides and insecticides are the only poisons to be found in a garden. 2) Many common garden plants are poisonous. 3) Toxicology is the study of poisons that come from synthetic sources, but not from natural sources. 4) Strong acids and bases can catalyze the hydrolysis of proteins. 5) Enzymes are.
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11) Fabric softeners are cationic surfactants. 12) Fabric softeners are anionic surfactants. 13) Oxygen-releasing bleaches are complexes of H2O2 (hydrogen peroxide) with sodium perborate or sodium perchlorate.  In hot water the peroxide is released and can then act as a bleach. 14) All-purpose cleaners may be mixed with bleach. 15) Plastics can only be.
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22.3   Short Answer Questions 1) Toxicology is the study of ________. 2) Name one commonly cultivated potted plant grown indoors that is very poisonous. 3) What type of damage do all corrosive poisons cause to living tissue? 4) People with Alzheimer's disease are deficient in ________. 5) The system of liver enzymes that helps to.
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41) Bleaches are A) oxidizing agents. B) reducing agents. C) brighteners. D) detergents. 42) Bleaches work by A) changing the structure of color-producing groups called chromophores to make them colorless. B) acting directly on the soiled spot to remove the soil. C) changing the stains so that they absorb UV light and then release blue light. D) covering the.
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81) The layer of skin whose moisture content determines whether our skin feels moist and soft or dry and flaky is the A) apocrine. B) dermis. C) epidermis. D) eccrine. 82) Detergents and abrasives are the major active ingredients in A) colognes. B) shampoos. C) skin creams. D) toothpastes. 83) Which substance strengthens tooth enamel? A) fluoride B) abrasive C) plaque D) protein 84) The.
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